Redirecting URI and Dynamic Content

Hi I'm kind of surprised there's no simple answer for this.

We need to redirect (also see requirements below):

https://foo.bar.com/authorize/aaa/bbb/someFile.jsp?response_type=<some_dynamic_value>&client_id=<some_dynamic_value>&scope=<some_dynamic_value>&redirect_uri=<some_dynamic_value>

to 

https://xxx.baz.com/authorize/aaa/bbb/someFile.jsp?response_type=<same_dynamic_value_from_request>&client_id=<same_dynamic_value_from_request>&scope=<same_dynamic_value_from_request>&redirect_uri=<same_dynamic_value_from_request>

Requirement #1: we can't use pools or policies.

Requirement #2: Only change requests coming into the path that starts with /authorize (e.g. https://foo.bar.com/authorize/etc. gets redirected). Other requests hitting the host with a different start to the path must remain unchanged (e.g. https://foo.bar.com/billling must stay the same).

Requirement #2: With a simple redirect, we want to change the host name only, and keep the paths in the redirect  the same as in the request and keep all query params and their values in the redirect the same as in the request (values change dynamically with each request)